DAISYSIAD ("we" or "the Company") handles location information of users of ChapterMade (the "Service")
in accordance with the Act on the Protection, Use, etc. of Location Information (the "Location Information Act") and related laws,
and this policy explains how.
For company information and contact, see the Business Info page.
1. Purposes of Processing Location Information
We process users' personal location information for the following purposes:
| Purpose | Description |
|---|---|
| Automatic travel records | Automatically record the places visited and routes traveled during a trip as raw material for automatic book generation |
| Automatic chapter generation | Analyze location and movement changes to compose the day's chapter segments automatically |
| Long-stay notification | When the user remains at the same place for 30+ minutes, send a notification suggesting to write a record |
| Map visualization | Visualize the user's route as a route-map appendix in the book |
| Automatic day start | When 100m+ movement is detected, automatically start the chapter's day |
2. Items Collected and Collection Method
2.1 Items Collected
- GPS coordinates: latitude, longitude, accuracy, collection time
- Visit information: latitude, longitude, arrival / departure time, reverse-geocoded place name
- Movement information: origin and destination coordinates, movement time and distance, inferred mode of transport (walking, biking, vehicle, etc.)
- iOS motion activity: used to assist inference of chapter-segment transport mode (processed on-device only)
2.2 Collection Method
- Periodic GPS collection via the iOS expo-location library (approximately every 3 minutes when location change is detected)
- Location change detection based on iOS Significant Location Change events
- If the user selects "Always Allow" location permission, collection also occurs in the background
2.3 When and Under What Conditions
- Collection occurs only from trip registration until the return date. We do not collect location outside the trip period.
- If the user explicitly denies location permission, this feature cannot be used, but other features (direct records, book generation, etc.) remain available.
3. Retention and Use Period of Location Information
| Item | Storage location | Retention period |
|---|---|---|
| Raw GPS coordinates (gps_traces) | Local SQLite on the user's device | Until withdrawal |
| Visit / movement information (location_visits, location_movements) | Local SQLite on the user's device | Until withdrawal |
| Place names (place_name) in published books | Supabase server | While the book is public |
| Motion activity results at publish time | Processed on-device and discarded (not sent to server) | — |
3.1 Coordinates Are Not Sent to the Server in Principle
The user's exact GPS coordinates (latitude, longitude) are stored only in the SQLite database on the user's device. When the user publishes a book to the Library, only the place name (place_name) is uploaded to the server; exact coordinates are not uploaded.
However, for the book's visual presentation, some coordinates (simplified route points for the route-map) may be uploaded at publish time; in this case, the user is notified before publishing.
4. Third-Party Sharing of Location Information
In principle, we do not provide users' location information to third parties. Exceptions:
- The user has given prior consent (e.g., publishing a book to the Library).
- Required by law (e.g., requests from investigative authorities, court orders).
When location information has been provided to a third party, we notify the user promptly under Article 19 of the Location Information Act.
5. Processing on Behalf of the Company
| Processor | Task | Data handled | Country |
|---|---|---|---|
| Supabase Inc. | Store place names included in published books | place_name (no coordinates) | USA |
| Mapbox, Inc. | Map rendering (map tile downloads) | Display-area coordinates (the user's location is not sent) | USA |
6. Rights of Guardians of Children Under 8
We process such that the following guardians may exercise the rights of children under 8 and similar persons:
- Children under 8
- Persons under adult guardianship
- Persons with a mental disability under Article 2(2)(2) of the Welfare of Persons with Disabilities Act and registered under Article 32 of the same Act (limited to severe disability)
However, this Service does not permit sign-up by persons under 14, so location information of children under 8 is not collected.
7. User Rights
Under Article 24 of the Location Information Act, users may exercise the following rights:
| Right | How to exercise |
|---|---|
| Withdraw all or part of consent to collection, use, or sharing of location information | iOS Settings → ChapterMade → Location → "Never," or request via the representative email |
| Temporarily suspend collection, use, or sharing | End the trip in the app, or revoke permission in iOS Settings |
| Request access or notification | Request via the representative email |
| Request correction or deletion | Edit the journey or delete records in the app, withdraw membership, or request via the representative email |
If consent for location information is withdrawn, this feature cannot be used; other features of the Service are not affected.
8. Destruction of Location Information
We destroy location information promptly in the following cases:
- The user withdraws membership.
- The user withdraws consent to location information.
- The retention period expires.
Destruction methods:
- Local data: bulk DELETE of the app's SQLite tables (gps_traces, location_visits, location_movements, etc.)
- Server data: permanent deletion of all related data including published copies via Supabase Auth
DELETE CASCADE
9. Retention of Records of Access to or Modification of Location Information Processing System
Under Article 16(2) of the Location Information Act, records of processing of location information are retained automatically in the Company's location information processing system for at least 6 months.
10. Location Information Officer
| Location Information Officer | Lee Subin |
| [email protected] |
Send location-information inquiries or reports to the email above; we will process within 10 business days.
11. Changes to This Policy
This Location Policy may be updated to reflect changes in law or services; updates are announced in advance via in-app notices or push notifications.